Infinite +1/+1 counters on a creature, Infinite ETB, Infinite LTB, Infinite death triggers, Infinite sacrifice triggers
Activate Bartolomé del Presidio by sacrificing Chaos Spewer.
When Chaos Spewer dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
When Chaos Spewer enters the battlefield, it triggers, putting a -1/-1 counter on it.
Resolve the Bartolomé del Presidio ability
Repeat.
Component Cards
How It Works
Activate Bartolomé del Presidio by sacrificing Chaos Spewer.
When Chaos Spewer dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
When Chaos Spewer enters the battlefield, it triggers, putting a -1/-1 counter on it.
Resolve the Bartolomé del Presidio ability
Repeat.